Opteron 8210 EE 's Advantages
Lower TDP (45W vs 130W)
Xeon X7542 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1333 vs 667)
Newer PCIe version (2 vs 1)
Higher base frequency (2.666GHz vs 1.8GHz)
More modern manufacturing process (45nm vs 90nm)